CVE-2021-32634 : Exploit Details and Defense Strategies

Emissary 6.4.0, a data-driven workflow framework, is vulnerable to Unsafe Deserialization in the

WorkSpaceClientEnqueue.action

REST endpoint. This vulnerability, tracked as CVE-2021-32634, can lead to post-auth Remote Code Execution. Immediate patching to version 6.5.0 is recommended.

Understanding CVE-2021-32634

CVE-2021-32634 outlines a critical vulnerability in the Emissary workflow framework that can result in Remote Code Execution post-authentication.

What is CVE-2021-32634?

Emissary 6.4.0 is susceptible to Unsafe Deserialization in post-authenticated requests to the

WorkSpaceClientEnqueue.action

REST endpoint, potentially leading to Remote Code Execution.

The Impact of CVE-2021-32634

The vulnerability poses a high severity risk with a CVSS base score of 7.2, allowing attackers to execute arbitrary code post-authentication.

Technical Details of CVE-2021-32634

The technical details of CVE-2021-32634 involve the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

Emissary 6.4.0 is vulnerable to Unsafe Deserialization in post-authenticated requests to the

WorkSpaceClientEnqueue.action

REST endpoint.

Affected Systems and Versions

Emissary versions prior to 6.5.0 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending maliciously crafted post-authenticated requests to the vulnerable REST endpoint.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-32634, immediate action is necessary to prevent exploitation and ensure system security.

Immediate Steps to Take

Upgrade to Emissary version 6.5.0 to address the vulnerability and prevent Remote Code Execution.

Long-Term Security Practices

Enforce strict network access controls and regularly update Emissary to prevent future vulnerabilities.

Patching and Updates

Refer to the official patches and advisories provided by National Security Agency on GitHub to stay informed about the latest security updates.